I went to ocean state job lot. they have liquid mega shock 12.5% sod cl for 2.99 a gallon. Bought 2 cases. It is cheaper than bleach right now. I added 2 last night. Levels high. woke up and back to nothing again.

TAC=.5
FC=0

CYA=40
TA=100
PH=7.2
calcium=160